McDermott posted the photo this week on
WhoSay and
tweeted the accompanying declaration: "I AM THE MODERN DAY BLOODY FACE!"

McDermott's social media revelation came after executive producer
Ryan Murphy confirmed McDermott's bloody role in an interview with
Entertainment Weekly. That followed significant speculation online that McDermott had made an uncredited vocal cameo during Bloody Face's phone call to the police in the Nov. 21 episode. (It's true, he did.)

We'll see McDermott in the flesh on the Dec. 12 installment, and he promises it's not going to be pretty:

As the New "Bloody Face" I mean business! Bar your windows. I'M COMING!!!